Related by context. Frequent words. (Click for all words.) 66 airways 59 trachea 58 nasal passages 55 blood vessels 54 lungs 53 coronary artery 52 sinuses 52 arteries 52 coronary arteries 51 windpipe 51 chest cavity 51 lung 51 artery 51 diaphragm 51 blocked arteries 50 sinus 50 secretions 49 left ventricle 49 mucus 49 aorta 49 urethra 49 pulmonary 49 apnea 49 intestines 48 aortic valve 48 respiratory tract 48 respiratory 48 lung function 48 clot 48 vascular 48 nasal 48 obstructive sleep apnea 47 mucous 47 bladder 47 esophagus 47 GI tract 47 bowel 47 catheter 47 capillaries 47 reflux 47 abdominal cavity 46 cerebrospinal fluid 46 ear canal 46 soft tissue 46 pores 46 uterus 45 intestine 45 aortic 45 gastrointestinal tract 45 suction 45 blocked artery 45 digestive tract 45 airflow 45 nostrils 45 edema 44 small intestine 44 intestinal tract 44 chest compressions 44 eardrum 44 lung tissue 44 breathing 44 suture 44 venous 44 oxygen 44 occlusion 44 hemostasis 44 esophageal 44 carotid artery 44 respiration 44 nostril 44 ventricles 44 ventricle 44 uterine 43 cornea 43 mucous membranes 43 soft tissues 43 physiologic 43 oxygenation 43 cavity 43 asthmatic 43 sleep apnea 43 compressions 43 muscle tissue 43 cardiopulmonary resuscitation 43 oral cavity 43 epithelial cells 42 clogged arteries 42 fibrosis 42 clotting 42 femoral artery 42 pulmonary function 42 epinephrine 42 oxygen mask 42 abdominal wall 42 larynx 42 cervix 41 ventilation 41 CPAP 41 tissues 41 vaginal 41 internal organs